brown paper bag test. entering the classroom and compares their skin tone to a paper bag. >> let me see your arm. can you put your arm out for me? >> follow instructions. >> you go in, you have to sit in the back. >> lighter than the bag, you can sit in the front. it's a real test from the early 1900s, used by social organizations, churches and fraternities and neighborhood groups to decide who was light skinned enough to join. was it too extreme to do to little kids? >> no, i don't think so at all. i think the more interactive, the more shocking the activity is, the better because it's going to stick with them. >> documentary "black in america" shares on sunday. i thought that was really shocking and if i were a parent in her classroom, i would have called, complained and taken my kid out. >> it's too young. it's just too young. >> 7-year-olds are too young. >> listen to what those kids are saying. they are already internalizing messages. >> where is that message coming from? that's a question i would ask